List and discuss six methods frequently used to collect primary data
Six methods used most often to collect primary data are:
1 . Mail survey: tips to improve reliability: use homogeneous sample, keep length reasonable, pretest and rewrite as necessary.
2 . Telephone survey: can involve errors as in mail surveys. Helpful to ask: Is the true meaning of the question being reflected by the interviewer, or is it distorted? Is the wording of the question likely to elicit a biased response?
3 . Internet survey: gathers data from people who have e-mail accounts or visit a particular website; can obtain highly specific information about people who use the Internet.
4 . Personal interview: a recommended supplement to mail or telephone surveys; helpful in observing subtle feedback that would otherwise be unavailable.
5 . Consumer panel: often used to test new products using the same persons in several tests; a problem is that panel members do not always represent the buying population and may not always give honest answers.
6 . Focus group: frequently used to gather information from small, homogeneous groups; allows the researcher to see how people view a product, intervention, or other issue; serves as a communications bridge between the researcher and the people the researcher is trying to reach; not to be used to persuade, convince, or reach a consensus.
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While waiting for a prescription to be filled, Dan decides to measure his blood pressure using the automated machine in the pharmacy. His blood pressure reading is 140 over 92 millimeters of mercury. He knows he has a few pounds to lose but never knew his blood pressure. Before returning home he goes to a fast-food restaurant and enjoys a cheeseburger and fries. At home, Dan tells his wife,
Tracy, his findings and waits for her response. Let's see if you know as much as Tracy about the implications of blood pressure. Which eating plan should Dan try to follow? a. A diet high in saturated fat and high in soluble fiber b. A diet low in potassium and high in whole grains c. A diet high in produce and whole grains and low in total fat d. A diet low in calories and starches e. All of these diets could be useful.
Which of the following is not an example of "noise" that can interfere with the message and distort it?
a. a natural disaster b. phones and pagers c. bad timing d. employee discipline
What factors should be considered when determining the amount of food servings you need each day?
A. your age B. your sex C. your daily amount of activity D. all of above
Choline is:
a. a form of Vitamin C. b. an essential nutrient. c. needed for the synthesis of the other B vitamins. d. one of the B vitamins.